xtensa: fix !CONFIG_XTENSA_CALIBRATE_CCOUNT build failure

Commits 925f5532 (xtensa: ccount based clockevent implementation) and e3f43291
(xtensa: ccount based sched_clock) introduced users of ccount_freq. This
variable doesn't exist when CONFIG_XTENSA_CALIBRATE_CCOUNT is disabled. Add
ccount_freq definition in this case.

Reported-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

arch/xtensa/include/asm/timex.h

@@ -35,13 +35,8 @@
 # error "Bad timer number for Linux configurations!"
 #endif
 
-#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 extern unsigned long ccount_freq;
 #define CCOUNT_PER_JIFFY (ccount_freq / HZ)
-#else
-#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))
-#endif
-
 
 typedef unsigned long long cycles_t;
 

arch/xtensa/kernel/time.c

@@ -29,9 +29,7 @@
 #include <asm/timex.h>
 #include <asm/platform.h>
 
-#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 unsigned long ccount_freq;		/* ccount Hz */
-#endif
 
 static cycle_t ccount_read(struct clocksource *cs)
 {
@@ -129,6 +127,8 @@ void __init time_init(void)
 	platform_calibrate_ccount();
 	printk("%d.%02d MHz\n", (int)ccount_freq/1000000,
 			(int)(ccount_freq/10000)%100);
+#else
+	ccount_freq = CONFIG_XTENSA_CPU_CLOCK*1000000UL;
 #endif
 	clocksource_register_hz(&ccount_clocksource, CCOUNT_PER_JIFFY * HZ);